hello, i put my bike back together yesterday and am having problems. this is the 3rd time i have had this problem but always thought it was the mechanic not putting it together right so i did it myself yesterday. ok, at idle she runs fine, then at mid range it pops and backfires a little bit, then top end it runs like a champ. i am so confused on what this could be, i keep thinking the carbs, ignition, timing. i dont know, please help me, any suggestions would be appreciated. i have toomey t5's, mild porting done to the cylinders, stock head, stock carbs. i know i need a jet kit but i put bigger mains just for now. im not riding it, i just want to get it broke in and ready.
thank you,
troy